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Merge pull request #1248 from lightpanda-io/ignore-comment

Browse Source 
textContent and innerText adjustements
This commit is contained in:
Karl Seguin
2025-12-08 17:58:05 +08:00
committed by GitHub
parent 65751a69ae 5284d75cb7
commit 09328aeb5a
5 changed files with 150 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
src/browser/tests/element/inner.html
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@@ -1,6 +1,12 @@
<!DOCTYPE html>
<script src="../testing.js"></script>
<div id=d1>hello <em>world</em></div>
<div id=d2>
<style>h1 { font-size: 1em; }</style>
<!-- this is a comment -->
This is a <br>
text
</div>
<script id=innerHTML>
const d1 = $('#d1');
@@ -20,6 +26,9 @@
d1.innerHTML = '<script src=inner.js>';
testing.expectEqual('<script src="inner.js"><\/script>', d1.innerHTML);
testing.expectEqual(false, inner_loaded);
const d2 = $('#d2');
testing.expectEqual("\n <style>h1 { font-size: 1em; }</style>\n <!-- this is a comment -->\n This is a <br>\n text\n", d2.innerHTML);
</script>
<script id=ids>
@@ -160,4 +169,8 @@
d1.innerText = 'new content';
testing.expectEqual('new content', d1.innerText);
testing.expectEqual(null, $('#link2'));
// TODO innerText is not rendered correctly for now.
//testing.expectEqual("This is a\ntext", d2.innerText);
testing.expectEqual(" This is a \n text ", d2.innerText);
</script>

17
src/browser/tests/node/text_content.html
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@@ -1,6 +1,12 @@
<!DOCTYPE html>
<script src="../testing.js"></script>
<div id=id1>d1 <p>hello</p></div>
<div id=id2>
<style>h1 { font-size: 1em; }</style>
<!-- this is a comment -->
This is a <br>
text
</div>
<script id=element>
const div = $('#id1');
@@ -8,6 +14,9 @@
div.textContent = 'world <p>!</p>';
testing.expectEqual('world <p>!</p>', div.textContent);
const div2 = $('#id2');
testing.expectEqual("\n h1 { font-size: 1em; }\n \n This is a \n text\n", div2.textContent);
</script>
<script id=document>
@@ -28,8 +37,8 @@
const attr = div.getAttributeNode('id');
testing.expectEqual('id1', attr.value);
testing.expectEqual('id1', attr.textContent);
attr.textContent = 'id2';
testing.expectEqual('id2', attr.value);
testing.expectEqual('id2', attr.textContent);
testing.expectEqual(div, $('#id2'));
attr.textContent = 'attr2';
testing.expectEqual('attr2', attr.value);
testing.expectEqual('attr2', attr.textContent);
testing.expectEqual(div, $('#attr2'));
</script>

93
src/browser/webapi/CData.zig
View File

@@ -60,6 +60,58 @@ pub fn getData(self: *const CData) []const u8 {
return self._data;
}
pub const RenderOpts = struct {
trim_left: bool = true,
trim_right: bool = true,
};
// Replace successives whitespaces with one withespace.
// Trims left and right according to the options.
pub fn render(self: *const CData, writer: *std.io.Writer, opts: RenderOpts) !void {
var start: usize = 0;
var prev_w: ?bool = null;
var is_w: bool = undefined;
const s = self._data;
for (s, 0..) |c, i| {
is_w = std.ascii.isWhitespace(c);
// Detect the first char type.
if (prev_w == null) {
prev_w = is_w;
}
// The current char is the same kind of char, the chunk continues.
if (prev_w.? == is_w) {
continue;
}
// Starting here, the chunk changed.
if (is_w) {
// We have a chunk of non-whitespaces, we write it as it.
try writer.writeAll(s[start..i]);
} else {
// We have a chunk of whitespaces, replace with one space,
// depending the position.
if (start > 0 or !opts.trim_left) {
try writer.writeByte(' ');
}
}
// Start the new chunk.
prev_w = is_w;
start = i;
}
// Write the reminder chunk.
if (is_w) {
// Last chunk is whitespaces.
// If the string contains only whitespaces, don't write it.
if (start > 0 and opts.trim_right == false) {
try writer.writeByte(' ');
}
} else {
// last chunk is non whitespaces.
try writer.writeAll(s[start..]);
}
}
pub fn setData(self: *CData, value: ?[]const u8, page: *Page) !void {
const old_value = self._data;
@@ -223,3 +275,44 @@ const testing = @import("../../testing.zig");
test "WebApi: CData" {
try testing.htmlRunner("cdata", .{});
}
test "WebApi: CData.render" {
const allocator = std.testing.allocator;
const TestCase = struct {
value: []const u8,
expected: []const u8,
opts: RenderOpts = .{},
};
const test_cases = [_]TestCase{
.{ .value = " ", .expected = "" },
.{ .value = " ", .expected = "", .opts = .{ .trim_left = false, .trim_right = false } },
.{ .value = "foo bar", .expected = "foo bar" },
.{ .value = "foo bar", .expected = "foo bar" },
.{ .value = " foo bar", .expected = "foo bar" },
.{ .value = "foo bar ", .expected = "foo bar" },
.{ .value = " foo bar ", .expected = "foo bar" },
.{ .value = "foo\n\tbar", .expected = "foo bar" },
.{ .value = "\tfoo bar baz \t\n yeah\r\n", .expected = "foo bar baz yeah" },
.{ .value = " foo bar", .expected = " foo bar", .opts = .{ .trim_left = false } },
.{ .value = "foo bar ", .expected = "foo bar ", .opts = .{ .trim_right = false } },
.{ .value = " foo bar ", .expected = " foo bar ", .opts = .{ .trim_left = false, .trim_right = false } },
};
var buffer = std.io.Writer.Allocating.init(allocator);
defer buffer.deinit();
for (test_cases) |test_case| {
buffer.clearRetainingCapacity();
const cdata = CData{
._type = .{ .text = undefined },
._proto = undefined,
._data = test_case.value,
};
try cdata.render(&buffer.writer, test_case.opts);
try std.testing.expectEqualStrings(test_case.expected, buffer.written());
}
}

21
src/browser/webapi/Element.zig
View File

@@ -225,10 +225,29 @@ pub fn getNamespaceURI(self: *const Element) []const u8 {
return self._namespace.toUri();
}
// innerText represents the **rendered** text content of a node and its
// descendants.
pub fn getInnerText(self: *Element, writer: *std.Io.Writer) !void {
var it = self.asNode().childrenIterator();
while (it.next()) |child| {
try child.getTextContent(writer);
switch (child._type) {
.element => |e| switch (e._type) {
.html => |he| switch (he._type) {
.br => try writer.writeByte('\n'),
.script, .style, .template => continue,
else => try e.getInnerText(writer), // TODO check if elt is hidden.
},
.svg => {},
},
.cdata => |c| switch (c._type) {
.comment => continue,
.text => try c.render(writer, .{ .trim_right = false, .trim_left = false }),
},
.document => {},
.document_type => {},
.document_fragment => {},
.attribute => |attr| try writer.writeAll(attr._value),
}
}
}

13
src/browser/webapi/Node.zig
View File

@@ -171,7 +171,16 @@ pub fn childNodes(self: *const Node, page: *Page) !*collections.ChildNodes {
pub fn getTextContent(self: *Node, writer: *std.Io.Writer) error{WriteFailed}!void {
switch (self._type) {
.element => |el| return el.getInnerText(writer),
.element => {
var it = self.childrenIterator();
while (it.next()) |child| {
// ignore comments and TODO processing instructions.
if (child.is(CData.Comment) != null) {
continue;
}
try child.getTextContent(writer);
}
},
.cdata => |c| try writer.writeAll(c.getData()),
.document => {},
.document_type => {},
@@ -719,7 +728,7 @@ pub const JsApi = struct {
switch (self._type) {
.element => |el| {
var buf = std.Io.Writer.Allocating.init(page.call_arena);
try el.getInnerText(&buf.writer);
try el.asNode().getTextContent(&buf.writer);
return buf.written();
},
.cdata => |cdata| return cdata.getData(),